Method RenderClusters

BindlessDeferred/BindlessDeferred.cpp:1268–1418

}

void BindlessDeferred::RenderClusters()
{
    ID3D12GraphicsCommandList* cmdList = DX12::CmdList;

    PIXMarker marker(cmdList, "Cluster Update");
    ProfileBlock profileBlock(cmdList, "Cluster Update");

    decalClusterBuffer.MakeWritable(cmdList);
    spotLightClusterBuffer.MakeWritable(cmdList);

    if(AppSettings::RenderDecals)
    {
        // Clear decal clusters
        D3D12_CPU_DESCRIPTOR_HANDLE cpuDescriptors[1] = { decalClusterBuffer.UAV() };
        DescriptorHandle gpuHandle = DX12::MakeDescriptorTable(ArraySize_(cpuDescriptors), cpuDescriptors);

        uint32 values[4] = { };
        cmdList->ClearUnorderedAccessViewUint(gpuHandle.GPUHandle, cpuDescriptors[0], decalClusterBuffer.InternalBuffer.Resource, values, 0, nullptr);
    }

    if(AppSettings::RenderLights)
    {
        // Clear spot light clusters
        D3D12_CPU_DESCRIPTOR_HANDLE cpuDescriptors[1] = { spotLightClusterBuffer.UAV() };
        DescriptorHandle gpuHandle = DX12::MakeDescriptorTable(ArraySize_(cpuDescriptors), cpuDescriptors);

        uint32 values[4] = { };
        cmdList->ClearUnorderedAccessViewUint(gpuHandle.GPUHandle, cpuDescriptors[0], spotLightClusterBuffer.InternalBuffer.Resource, values, 0, nullptr);
    }

    clusterConstants.Data.ViewProjection = camera.ViewProjectionMatrix();
    clusterConstants.Data.InvProjection = Float4x4::Invert(camera.ProjectionMatrix());
    clusterConstants.Data.NearClip = camera.NearClip();
    clusterConstants.Data.FarClip = camera.FarClip();
    clusterConstants.Data.InvClipRange = 1.0f / (camera.FarClip() - camera.NearClip());
    clusterConstants.Data.NumXTiles = uint32(AppSettings::NumXTiles);
    clusterConstants.Data.NumYTiles = uint32(AppSettings::NumYTiles);
    clusterConstants.Data.NumXYTiles = uint32(AppSettings::NumXTiles * AppSettings::NumYTiles);
    clusterConstants.Data.InstanceOffset = 0;
    clusterConstants.Data.NumLights = Min<uint32>(uint32(spotLights.Size()), AppSettings::MaxLightClamp);
    clusterConstants.Data.NumDecals = uint32(Min(numDecals, AppSettings::MaxDecals));

    D3D12_CPU_DESCRIPTOR_HANDLE rtvHandles[1] = { clusterMSAATarget.RTV.CPUHandle };
    ClusterRasterizationModes rastMode = AppSettings::ClusterRasterizationMode;
    if(rastMode == ClusterRasterizationModes::MSAA4x || rastMode == ClusterRasterizationModes::MSAA8x)
        cmdList->OMSetRenderTargets(1, rtvHandles, false, nullptr);
    else
        cmdList->OMSetRenderTargets(0, nullptr, false, nullptr);

    DX12::SetViewport(cmdList, AppSettings::NumXTiles, AppSettings::NumYTiles);
    cmdList->IASetPrimitiveTopology(D3D_PRIMITIVE_TOPOLOGY_TRIANGLELIST);

    cmdList->SetGraphicsRootSignature(clusterRS);

    if(AppSettings::RenderDecals)
    {
        // Update decal clusters
        decalClusterBuffer.UAVBarrier(cmdList);